Pigments

Question 1

What are the photosynthetic pigments?

Answer 1

Carotenoids and Chlorophyll

Question 2

During the light reaction, what is the green pigment that is directly responsible for the absorption of light energy to make the ATP and NADPH?

Answer 2

Chlorophyll a

Question 3

Chlorophyll absorbs mostly what wavelength of light?

Answer 3

Blue and red

Question 4

Which wavelength of light is reflected by chlorophyll?

Answer 4

Green

Question 5

The light absorbing pigments, such as chlorophyll and carotenoids, are located in the ________?

Answer 5

Thylakoid membrane

Question 6

Carotenoids and other chlorophylls, aside from chlorophyll a, have no direct involvement in photosynthesis. These pigments are called?

Answer 6

Accessory Pigments

Question 7

Chlorophyll a and b both have a porphyrin ring and a hydrophobic tail. They only differ because _________?

Answer 7

Chlorophyll a possesses a methyl group while Chlorophyll b has an aldehyde group.

Question 8

Chlorophylls have porphyrin ring that has __________.

Answer 8

4 pyrrole nuclei

Question 9

The chemical formula of chlorophyll a is

Answer 9

C55H72O5N4

Question 10

The chemical formula of chlorophyl b is

Answer 10

C55H70O6N4

Question 11

Absorbs excess energy to avoid the formation of reactive oxygen

Answer 11

Carotene

Question 12

Transmits and transfers different light wavelength resonance to chlorophyl a

Answer 12

Chlorophyll b

Question 13

The primary pigment that absorbs light energy and has direct involvement in photosynthesis.

Answer 13

Chlorophyll a

Question 14

Pigments for the protection of photosystems.

Answer 14

Xanthophyll

Question 15

Carotenes and Xanthophylls are carotenoids. They differ because ____________.

Answer 15

carotenes don’t contain oxygen while xanthophylls contain oxygen.

Question 16

Photosynthetic organisms contain light-absorbing molecules called

Answer 16

Pigments

Question 17

Other accessory pigments, known as ___________________, primarily absorb blue–green light and reflect yellow or yellow–orange light. It becomes visible when chlorophyll breaks down as when the leaves change their color to yellow or orange.

Answer 17

Carotenoids

Question 18

In the electromagnetic spectrum, photosynthetic pigments can only absorb light energy whose wavelengths range from _______

Answer 18

400nm to 700nm